<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        #box{
            margin: 0;
            padding: 0;
            list-style: none;
            border: 1px solid red;
            text-align: center;
        }
    </style>
</head>
<body>
    <!-- <div>test2</div> -->
    <div id="box">
        <li>床前明月光</li>
        <li>地上鞋两双</li>
        <li>一对狗男女</li>
        <li>用于在一起</li>
    </div>
</body>
</html>